Nut-lock.



H. VATBRHAUS'.

NUT LOCK. APPLICATION FILED JAN. 2 1, 1912 1,075,523. I Patented 0mg. 14, 1913.

HEN-B53 vernnrrsus, or COOKS, MICHIGAN.

pecificati n of Letters Ea'tent.

ave-Lose- Paten ed Oct. 14. EH3.

Application filed Eanuery 2 1912. Serial No. 673,184.

To whom it may concern:

, Be it known that l, HENRY VATERHAUS, a citizen of the United States, residing at looks, in the county of Schoolcraft and of Michigan, have invented certain new and useful improvements in Nut-Locks, of wh ch the following is a specification.

' invention relates to improvements in ocks, andhas for one of its objects to nrov slotted bolt with a key adapted to tion a bolt having nut and key applied.

thereto in accordance with my invention, and partly broken away, Fig. 2 is a cross section on" the line 2 perspectview of the key.

As seen in the drawings, 1 represents the shank of the bolt, he ving the screw threads 2 on one end and adapted to have the nut 3 screwed thereon. A groove r is formed in tl e bolt longitudinally thereof and transof the threads and having its inner vei end o of slightly less depth than the outer end, The nut 3 has similar slot 4; in its opening and transversely of the threads and ada )ted when screwed onto the bolt. to re b ister with the first-mentioned slot or groove 4, and when so registered, to receive the ire 7. The key 7 has an upturned head 8 on its outer end adapted to lie against the outer face of the nut whenit is drive into the aforesaid registered grooves. ""lhe shank of the key is rectangular in cross-section'aue the slot or groove'in the nut, togethe the groove in the bolt, form a rector passage through which the key is adag be inserted. The fact that the-"inner e ll of the groove in the bolt is slightly less in depth than the outer end, will have a tendency to force the shank of the key upward against 2 of Fig. 1, Fi 3 is a the nut, and in so doing cause the end of said shank to bite into the base of the shallow portion of the groove in the bolt and can't the nut and lock. the threads of the bolt and nut together. The head of the key will lie fiat against the face of the nut and will not be in the way to be struck by outside. objects, so that it would be displaced or broken.

To remove the nut all that it is necessary to do is to insert a suitable chisel like instrument between the head of ,the key and the nut and by a sharp blow cause thekey to be withdrawn when the nut may be readily unscrewed.

To prevent the key hacking out, under jarring, 1 form on the under face of the key, at a suitable distance from the head 8, a transverse toot-h 9. This tootis of a height equal to the difference between the depths of the key and the slots or grooves t and 4c of the nut and bolt at their outer ends, so that the teeth may enter the slot 4:- The forward face 9 of the tooth is curved and meets the rearward face 10 which is vertical and plain at the outer edge. thereof to form a knife edge 11. Thus when the key is forced into the registered slots, the tooth will read-- ily slide forward, but will bite into the bottom wall of the slot 4 upon backward movement.

From the foregoing it will be readily seen that I have provided a simple and effective lock for connecting the nut/and th e b'olt toprevent the nutfrom working loose.

What is claimed is.

A nutlock comprising a bolt having a longitudinal groove in its threaded end, said groove being of greater depth at its outer end than at its inner end, a nut adapted to be screwed on the bolt and provided with a longitudinally disposed groove of constant depth. and width in the wall of the opening in the nut, a key having its shank rectanguserted in the grooves of the bolt and nutivhen registered and having a head adapted to lie against the outer face of the nut, and a transversely arranged tooth on the under face of the key, said tooth having a forward curved face and a rearward plain face, the 100 lar in cross section and adapted to be in-.

angle formed by the meeting of the curved In testimony v v'hereof I affix my signature 'and plain faces being adapted to bite inte" in,- the presenceof two. witnesses.

the bottom of the Wall of the belt, the Sinailowness of the inner end Of the slot having a HENRY VATERHAUS' tendency to force the inner end of the shank Witnesses:

up against the 'nut and Wedge the parts to? -J.'A.- WEHNER,

gether. BEN Pomlm.

Copies of this patent may be obtained for five sags each, by addressing the "Commissioner of Patents,

' I Washington, D. C." 

